<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>content</title>
    <link rel="stylesheet" href="css/loading.css">
    <style>
        .a1{

        }
    </style>
</head>
 <button>点击</button>

<!--<div style="height: 1000px"></div>-->
<script src="js/jquery.min.js"></script>
<script src="js/loading.js"></script>
<body>
   <script>
       $("button").click(function(){
           loadInfo.mesg()
       })

   </script>
</body>
</html>